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| author | Dehao Chen <dehao@google.com> | 2017-04-13 19:52:10 +0000 |
|---|---|---|
| committer | Dehao Chen <dehao@google.com> | 2017-04-13 19:52:10 +0000 |
| commit | 2c7ca9b5df41332b32adec1def081f48ab6ec5d7 (patch) | |
| tree | ffab65ae25229620b93f6f38e7a6cce2bc6666a1 /llvm/lib/Transforms/Utils/LCSSA.cpp | |
| parent | a80f2041f78b025f573ab237186397e8834e1d59 (diff) | |
| download | bcm5719-llvm-2c7ca9b5df41332b32adec1def081f48ab6ec5d7.tar.gz bcm5719-llvm-2c7ca9b5df41332b32adec1def081f48ab6ec5d7.zip | |
SamplePGO: convert callsite samples map key from callsite_location to callsite_location+callee_name
Summary: For iterative SamplePGO, an indirect call can be speculatively promoted to multiple direct calls and get inlined. All these promoted direct calls will share the same callsite location (offset+discriminator). With the current implementation, we cannot distinguish between different promotion candidates and its inlined instance. This patch adds callee_name to the key of the callsite sample map. And added helper functions to get all inlined callee samples for a given callsite location. This helps the profile annotator promote correct targets and inline it before annotation, and ensures all indirect call targets to be annotated correctly.
Reviewers: davidxl, dnovillo
Reviewed By: davidxl
Subscribers: andreadb, llvm-commits
Differential Revision: https://reviews.llvm.org/D31950
llvm-svn: 300240
Diffstat (limited to 'llvm/lib/Transforms/Utils/LCSSA.cpp')
0 files changed, 0 insertions, 0 deletions
